EP2247897B1 - Installation de production d'eau chaude sanitaire - Google Patents

Installation de production d'eau chaude sanitaire Download PDF

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Publication number
EP2247897B1
EP2247897B1 EP20090720206 EP09720206A EP2247897B1 EP 2247897 B1 EP2247897 B1 EP 2247897B1 EP 20090720206 EP20090720206 EP 20090720206 EP 09720206 A EP09720206 A EP 09720206A EP 2247897 B1 EP2247897 B1 EP 2247897B1
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EP
European Patent Office
Prior art keywords
boiler
conduit
water
duct
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20090720206
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German (de)
English (en)
French (fr)
Other versions
EP2247897A1 (fr
Inventor
Joseph Le Mer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Giannoni France
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Giannoni France
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Publication date
Application filed by Giannoni France filed Critical Giannoni France
Publication of EP2247897A1 publication Critical patent/EP2247897A1/fr
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Publication of EP2247897B1 publication Critical patent/EP2247897B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0026—Domestic hot-water supply systems with conventional heating means
    • F24D17/0031—Domestic hot-water supply systems with conventional heating means with accumulation of the heated water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
    • F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
    • F24H1/523—Heat exchangers for sanitary water directly heated by the burner

Definitions

  • the present invention relates to an installation for producing domestic hot water.
  • a sanitary hot water production installation equipping a dwelling both individual and collective, includes a boiler and two exchangers, which will be called one primary, and the other secondary.
  • the boiler that for example runs on gas or fuel oil is used to heat a first liquid.
  • it may be, in the case of a so-called “mixed” installation, water flowing in the radiators of a central heating system.
  • the boiler is equipped with the primary heat exchanger, whose function is to transmit a portion of the heat generated by the hot gases from the combustion of the burner equipping the boiler.
  • This boiler is for example of the condensing type, comprising a (or) coil (s) helical (s) (s), for example stainless steel, surrounding the burner, and in which passes the first liquid to be heated.
  • a (or) coil (s) helical (s) (s) for example stainless steel
  • the first liquid which circulates in closed circuit, can be selected and / or treated, in particular demineralized and degassed so that it does not pose problems related to corrosion and deposition of solids, including limestone -source of clogging, against the walls of the tube (s) of the primary exchanger.
  • the flue gases from the burner have for example a temperature of the order of 950 ° C. and the first liquid, initially at ambient temperature, is heated to a temperature of about 80 ° C. ° C.
  • the secondary heat exchanger has the function of transmitting heat from the first liquid thus heated to the second liquid, in this case sanitary water, which is used for the purpose of supplying a point of use on demand.
  • sanitary water which is used for the purpose of supplying a point of use on demand.
  • a sink a sink, a shower and / or a bath for example.
  • a secondary exchanger of this kind is described for example in the patent document FR -A-2847972 .
  • the temperatures used are considerably lower than in the primary exchanger, so that the passage inside the exchanger of the untreated sanitary water is that is to say, drinking water from the public distribution network does not pose, in principle, a critical problem of corrosion or solid matter deposits.
  • Such an installation comprising a boiler and two exchangers generally gives satisfaction in terms of operation, reliability and longevity.
  • such a domestic hot water production installation comprises a boiler, a hot water storage tank, a sanitary cold water supply pipe, a water supply boiler feed pipe to be heated, provided with a pump adapted to ensure the circulation of the water to be heated to the boiler when it is started and to prohibit this circulation when it is stopped, a duct for drawing domestic hot water, a duct leaving heated water out of the boiler.
  • said sanitary cold water supply duct is connected via a "T" connector, said first connector, on the one hand, to the boiler supply duct and, on the other hand , to a so-called recirculation duct, opening into the lower part of the hot water storage tank, while the boiler outlet duct and the draw duct open respectively in the central portion and in the upper part of the balloon.
  • This installation is regulated for example so that the water stored in the flask is kept permanently at a temperature of 65 ° C, which is generally suitable for the applications concerned.
  • this cold water is mixed with hot water from the lower part of the flask via the recirculation duct, and it is this mixture (of warm water) that the pump delivers to the water. boiler inlet.
  • hot sanitary water at a temperature of 65 ° C, remains stagnant in the pipework upstream of the balloon, including inside the boiler.
  • the descent in temperature of this water, in the absence of specific device, is slow.
  • the present invention aims to overcome these difficulties by proposing, within an installation of the type mentioned above, both to eliminate -or to all the less significantly reduce the risk of scaling of its pipes while significantly reducing the energy losses that normally occur between successive draws.
  • a domestic hot water production system is shown, on the upstream side, on an EFS cold water supply , which may consist of a simple tap for drinking water and, on the downstream side, on a domestic hot water outlet.
  • EFS supplying one or more points of use (sink, washbasin, shower, bath, for example).
  • the installation comprises a boiler 1 provided with a burner 60 supplied with fuel mixture, for example a gas / air or oil / air mixture by means of a fan 6 with an adjustable flow rate.
  • fuel mixture for example a gas / air or oil / air mixture by means of a fan 6 with an adjustable flow rate.
  • the function of the installation is to heat the domestic cold water using this boiler, and to maintain the domestic hot water stored, at a given temperature, generally of the order of 65 ° C, in a storage tank. 2 with insulated wall, from where it can be drawn on demand to supply one or more point (s) of use.
  • the balloon 2 has a generally cylindrical shape, of vertical axis, with hemispherical end portions, and is supported on the ground by a base 20.
  • the burner 60 in the illustrated embodiment, is a cylindrical burner which is surrounded in a helical tubular coil 10 of stainless steel in which the water to be heated passes.
  • the assembly is housed in an envelope 11 provided with a flue gas exhaust duct and cooled (not shown), for example connected to a chimney leading to the outside of the house.
  • the burned and cooled gases are then evacuated via the sleeve.
  • the EFS sanitary cold water inlet into the installation is done by means of a duct 8 having a "T" connection 80 allowing the bifurcation of the water flow either in a duct 30 or in a duct 13.
  • the conduit 30 has a portion 3 of substantially enlarged diameter, forming a storage balloon.
  • the duct 30 Downstream of the balloon 3, the duct 30 also has a "T" connector 90, which will be conventionally designated “first connector". T ". This authorizes the bifurcation of the flow of water either in a conduit 50, or in a conduit 9, called recirculation.
  • the conduit 9 opens through its outlet orifice 900 inside the balloon 2, in the lower part thereof.
  • the conduit 50 is provided with an electrically controlled pump 5 and is connected to the inlet of the tubular winding 10 of the boiler 1.
  • the output duct 40 of this tubular winding 10 is, in turn, provided with a three-way valve (solenoid valve) 4. On the latter are connected, on the one hand, the aforesaid conduit 13 from the second connector 80 and on the other hand, a conduit 12 which opens out through its outlet orifice 120 inside the balloon 2, in the middle part (approximately mid-height) thereof.
  • a three-way valve solenoid valve
  • the three-way valve 4 is adapted to be able to selectively connect the outlet duct 40 of the boiler, either with the duct 13 or with the duct 12.
  • the DHW outlet duct or draw-off duct 7, leaves via an inlet orifice 70 in the upper part of the flask 2.
  • a conventional purge system 21 In the lower part of the balloon 2 is mounted a conventional purge system 21.
  • This installation also comprises three temperature probes, namely one T 2 which captures the temperature of the water conveyed by the duct 40, at the outlet of the boiler, another T 1 which captures the temperature of the present water. in the lower portion of the balloon 2, at a level above the orifice 900 (but below the orifice 120) the one at which said re-circulation duct 9 opens and the third T 3 which captures the temperature of the water present in the upper portion of the balloon 2 near the inlet 70 of the drawing duct 7.
  • the capacity (volumetric capacity) of the balloon 3 is substantially equal to that of the accumulated ducts 9, 50, 10, 40, 13, 12, and 30 (except balloon).
  • this capacity is about 161.
  • the figure 1 illustrates the control and automated management of the installation.
  • the installation comprises an electronic control unit UEC, in which predetermined operating instructions have been introduced by an operator (heating engineer and / or user). These include the optimal flow of the pump 5, the power used in the boiler 1, and the DHW outlet temperature of the DHW.
  • the UEC will be able to control, according to a given program, the start or stop and the flow rate of the pump 5, the start or stop of the boiler 1 and its power (function of the flow rate of the fan 6), as well as the change of state of the valve 4, this by implementing a process which will now be described with reference to the Figures 3 to 6 .
  • Boiler 1 is on (fan 6 on and burner 60 on).
  • the valve 4 is thus oriented that the conduits 40 and 12 are in communication, while the conduit 13 is isolated.
  • the pump 5 is also running, and is set to provide sufficient flow for proper operation of the boiler, even for a low flow rate i 2 .
  • the flow rate of the pump 5 is independent of the flow rate.
  • a flow of hot water i 2 thus leaves the balloon through the upper orifice 70 of the balloon 2 and passes into the conduit 7.
  • an identical flow of cold water i 1 arrives in the installation via the conduit 8. It can not enter the conduit 13 whose other end is closed (valve 4 closed) and therefore enters completely into the conduit 30 and the balloon 3, to come out via the first connector 90, and supply the pump 5. It is then mixed at a flow i 3 which leaves the base of the balloon 2 by the recirculation duct 9.
  • This mixture is heated to a temperature of 65 ° C., controlled by the probe T 2 and is distributed in the central portion of the flask 2 via the conduit 12 (arrows j ).
  • This hot water is distributed inside the storage tank 2 by providing some mixing and homogenization of the temperature as a fraction i 2 out of the top and another i 3 out of the bottom.
  • the UEC keeps the pump 5 and the boiler 1 running without changing the position of the valve 4.
  • the pump 5 is kept running.
  • the cold water contained in the balloon 3 very quickly causes the cooling of the boiler winding 10, and the mixture of the cold water supplied by the balloon 3 with the hot water dose-volume substantially equivalent-which was in the piping implemented here results in an intermediate final temperature, of the order of 35 to 40 ° C.
  • the UEC controls the stopping of the pump 5.
  • the water present in the ducts is thus at a temperature too low for the limestone to be deposited on the walls of these ducts at the risk of scaling, in accordance with the desired objective.
  • the balloon 2 In the absence of drawing, the balloon 2 remains isolated and the hot water it contains remains at the set temperature, for example 65 ° C.
  • the UEC can be programmed so that in case of "small draws”, corresponding to low flow rates and / or short periods of demand for domestic hot water, the system remains in the previous state: boiler 1 off, pump 5 stopped and valve 4 in the bypass position.
  • the incoming cold water passes through the conduit 30, expels the intermediate-temperature water which occupies this conduit, including the balloon 3, and the mixture is discharged through the bypass duct 9 at the base of the balloon 2.
  • the UEC commands the restarting of the boiler, and returns the installation to its initial operating state corresponding to that of the figure 2 previously described.
  • This embodiment differs essentially from the previous one in that the storage balloon - here designated 3'- is not separated here from the storage tank - here designated 2'-, but in integral form.
  • the balloon 3 occupies the internal volume of the hemispherical bottom cap of the balloon 2' and is separated from the internal volume of the latter by a horizontal partition 22.
  • the conduit 8 for supplying cold water opens directly into the tank 3 'via an outlet orifice 810.
  • the first "T” connector here designated 91, is positioned inside the storage tank 2 '.
  • the UEC initially keeps the pump 5 and the boiler 1 running, without changing the position of the valve 4. Hot water is then brewed. , with circulation in closed circuit, the going to the boiler being through the ducts 93 and 50, and the return to the flask through the ducts 40 and 12.
  • the balloon 3 ' filled with cold water, remains isolated .
  • the probe T 2 regulates the power of the burner, which decreases as the temperature rises in the balloon 2 '.
  • the UEC controls the stopping of the burner 60.
  • the cold water contained in the balloon 3 'very quickly causes the cooling of the boiler winding 10, to achieve an intermediate final temperature, of the order of 35 to 40 ° C.
  • the UEC then controls, by a time delay, the stopping of the pump 5.
  • the water present in the ducts is thus at a temperature too low for the limestone to be deposited on the walls of these ducts at the risk of scaling, in accordance with the desired objective.
  • the flask 2 In the absence of drawing, the flask 2 'remains isolated and the hot water it contains remains at the set temperature, for example 65 ° C.
  • the UEC can be programmed so that in case of "small draws", corresponding to low flow rates and / or short periods of demand for domestic hot water, the system remains in the system. previous state (boiler off, pump off and valve in bypass position).
  • the sanitary cold water flow entering through the orifice 810 of the duct 8 is the same as that of hot water leaving the flask 2 through the orifice 70 of the duct 7.
  • the incoming cold water expels the intermediate-temperature water which occupies the balloon conduit 3 ', and the mixture is discharged through the tubes 910 and 92 of the connector 91 to be diffused at the base of the balloon 2.
  • the UEC controls the restarting of the boiler, and returns the installation to its normal initial operating state.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Bakery Products And Manufacturing Methods Therefor (AREA)
EP20090720206 2008-03-06 2009-02-27 Installation de production d'eau chaude sanitaire Active EP2247897B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0851465A FR2928442B1 (fr) 2008-03-06 2008-03-06 Installation de production d'eau chaude sanitaire
PCT/EP2009/052401 WO2009112385A1 (fr) 2008-03-06 2009-02-27 Installation de production d'eau chaude sanitaire

Publications (2)

Publication Number Publication Date
EP2247897A1 EP2247897A1 (fr) 2010-11-10
EP2247897B1 true EP2247897B1 (fr) 2011-07-13

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Application Number Title Priority Date Filing Date
EP20090720206 Active EP2247897B1 (fr) 2008-03-06 2009-02-27 Installation de production d'eau chaude sanitaire

Country Status (10)

Country Link
US (1) US9134037B2 (ko)
EP (1) EP2247897B1 (ko)
JP (1) JP5206798B2 (ko)
KR (1) KR101447251B1 (ko)
CN (1) CN101965485B (ko)
AT (1) ATE516469T1 (ko)
CA (1) CA2713733C (ko)
FR (1) FR2928442B1 (ko)
RU (1) RU2454609C2 (ko)
WO (1) WO2009112385A1 (ko)

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Also Published As

Publication number Publication date
FR2928442A1 (fr) 2009-09-11
KR20110009100A (ko) 2011-01-27
RU2454609C2 (ru) 2012-06-27
CA2713733C (fr) 2015-07-14
RU2010140792A (ru) 2012-04-20
CN101965485B (zh) 2013-07-24
EP2247897A1 (fr) 2010-11-10
US9134037B2 (en) 2015-09-15
WO2009112385A1 (fr) 2009-09-17
JP5206798B2 (ja) 2013-06-12
CN101965485A (zh) 2011-02-02
CA2713733A1 (fr) 2009-09-17
JP2011513692A (ja) 2011-04-28
FR2928442B1 (fr) 2010-12-17
ATE516469T1 (de) 2011-07-15
KR101447251B1 (ko) 2014-10-06
US20110132279A1 (en) 2011-06-09

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